I got this mouse a while ago and my sister began to use it for her school computer because my computer at home was broke and I didn't have a use for the mouse. My computer was fixed and when she gave it back to me and when I plugged it in it wouldn't turn on. I pressed the button with the internet symbol above it and then tried again and it stayed on for 3 or 4 seconds before it turned off. During the 3 or 4 seconds I tried to move it around and see if it would at least move the cursor but it wouldn't! So I tried new batteries and it is doing the exact same thing! What is wrong?

Computers & Internet - Staples - Wireless Optical Mouse, Silver